Communication fault with option

What does CEO mean?

This fault indicates a loss or error in communication with an installed option module (e.g., a fieldbus card or specific I/O module). By default, this condition triggers a full TRIP, inhibiting all ignition pulses and resetting the Ready signal, as the drive may not be able to operate safely or correctly without the option module's functionality. Manual reset is required.

Additional Steps

Steps 1–2 are listed in Priority Fix.

1. 3

   Inspect option module status LEDs: Look for diagnostic LEDs on the option module itself for further indications.

2. 4

   Verify communication parameters: Check baud rate, parity, data bits, and stop bits if applicable.

3. 5

   Attempt to reseat the option module: Power down the drive, remove, and reinsert the option module to ensure good contact.